Parallel Dreams

I don't know if anyone would even know this - if anyone travles to parallel worlds in dreams besides me - a least that they have figured out or realize. Anyway, I have discovered that sometimes when I go to sleep my spirit does travel to other worlds than the dream world and sometimes parallel worlds. It seems that I go to one particular one the most. Ive accepted this for fact. The one thing that I have noticed in these dreams, is that I'm not always quite myself. I was wondering if when you dream into a parallel world, does the you in that world have the same dream?